List of top Questions asked in NEET (UG)

A pipe open at both ends has a fundamental frequency \(f\) in air. The pipe is now dipped vertically in water drum to half of its length. The fundamental frequency of the air column is now equal to:
Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase
Match List I with List II
List IList II
A. PteridophyteIV. Salvinia
B. BryophyteIII. Polytrichum
C. AngiospermII. Ginkgo
D. GymnospermI. Salvia
Dalton’s Atomic Theory could not explain which of the following?
Which of the following statements about RuBisCO is true?
Consider the following:
A. The reductive division for human female gametogenesis starts earlier than that of male gametogenesis.
B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
C. The first polar body is associated with the formation of the primary oocyte.
D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.
Which one of the following compounds can exist as cis-trans isomers?
How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

Which of the following options represent the variation of photoelectric current with the property of light shown on the x-axis? 

In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω(t) and average amplitude A(t) of the system change with time t. Which one of the following options schematically depicts these changes correctly? 

Which of the following is the unit of productivity of an Ecosystem?
Match List - I with List II
List IList II
A. ScutellumII. Cotyledon of Monocot seed
B. Non-albuminous seedIV. Rudimentary cotyledon
C. EpiblastIII. Groundnut
D. PerispermI. Persistent nucellus
Match List - I with List II
List IList II
A. The Evil QuartetIII. Causes of biodiversity losses
B. Ex situ conservationI. Cryopreservation
C. Lantana camaraII. Alien species invasion
D. DodoIV. Extinction
An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster's angle. Then:
The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce color in the presence of a chromogenic substrate. Given below are two statements about this method: Statement I: The blue-colored colonies have DNA insert in the plasmid, and they are identified as recombinant colonies. Statement II: The colonies without blue color have DNA insert in the plasmid, and are identified as recombinant colonies.

Identify the part of a bio-reactor which is used as a foam breaker from the given figure.
part of a bio-reactor

Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrates.
Reason (R): The members of subphylum Vertebrata possess a notochord during the embryonic period; the notochord is replaced by a cartilaginous or bony vertebral column in adults.
Histones are enriched with:
Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?
Which factor is important for termination of transcription?
Consider the following statements regarding the function of adrenal medullary hormones:
A. It causes pupillary constriction.
B. It is a hyperglycemic hormone.
C. It causes piloerection.
D. It increases the strength of heart contraction.
Given below are two statements:
Statement I: The DNA fragments extracted from gel electrophoresis can be used in the construction of recombinant DNA.
Statement II: Smaller size DNA fragments are observed near the anode while larger fragments are found near the wells in an agarose gel.
What is the main function of the spindle fibers during mitosis?
All living members of the class Cyclostomata are: